Improvement in stove-pipe thimbles



J. s. BROOKS.

Stovepipe Thimble No. 38.727. Pathted June 2. 1863.

UNITED STATES PATENT OFFICE.-

JOHN S. BROOKS, OF ROCHESTER, NEWYORK.

IMPROVEMENT IN STOVE-PIPE THIMBLE'S.

Specification forming part of Letters Patent No. 38,727, dated June 2, 1863.

To aZZ whom it may concern:

Be it known that I, JOHN S. BROOKS, of Rochester, in the county of Monroe and State of New York, have invented a new and Improved Mode of Oonstructin g Stove-Pipe Thimbles; and I do hereby declare the following to be a'full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Figure 1 is a top view of the front side. Fig. 2 is a top view of the reverse side.

Like letters designate corresponding parts in both the figures.

My improved thimble consists of the collar A, which should be long enough to reach through the wall of the chimney into which it is laid, and is made in the fluted or corrugated manner shown to fasten it firmly in the mortar, and also to prevent the condensed products of smoke from running back and streaking the face of the chimney, which is accomplished by its intersecting with the flange B where a shoulder is formed. The inner points of the corrugations are carried to the line of the opening in the flange for the purpose of supporting the pipe and preventing it from swaying. The adjustable slide 0 is attached to the flange B by any practical way, for the purpose of binding the pipe firmly to the thimble and closing the space around the pipe. The method of opera ting this slide, as shown in the drawings, is to fasten it to the flange at one end by a pivot, and the opposite end is borne down upon the pipe, employing the principle of the lever, and when tight to the pipe a thumb-screw, which moves in the slot, is screwed up to fasten it in its place. The pipe is easily sprung to the shape of the opening, which is a trifle depressed from a true circle on the side touched by the slide, and for that reason the slide should be upon the upper side of the thimble, when it is laid in the wall,in which position it will not be observed, being hid from view by the pipe. The whole should be made of cast-iron for durability and strength, and the flange or face may be made 1 ornamental, and when no pipe is in it a cover either tight or open for ventilation is easily held in its place by the side, or may be held by the thumb-screw which holds the slidein place. The ordinary thimbles are usually from onequarter to one-half inch larger than the stovepipe of corresponding size for which they are intended, being so made to admit pipes, which always vary more or less in difl'erent makes, which are sold for the same size. This space is generally so little as not to be noticed or stopped easily, while it is sufficient to injure the draft of the stove materially, let out smoke and dust into the room, soiling the wall around the opening, and leaving the pipe perfectly loose to fall out at a few inches displacement, which is not an uncommon, but a very disagreeable, occurrence.

I think my improved thimble will obviate all the objections mentioned in a very simple and practical way, and may be the means of preventing many fires which have their origin in defects of stove-pipes and chimneys.

What I claim as my invention, and desire to secure by Letters Patent, is.

1. A stove pipe thimble having the adjustable slide O, or its equivalent, as and for the purposes shown and described.

2. The corrugated collar, when so made as to hold the pipe by its inner points, while the outer points or grooves carry the creosote into the flue.

JOHN S. BROOKS.

Witnesses: I

CHAS. Coorn, WILLIAM W. WADSWORTH. 

